World Health Organization

The virus has killed at least 240 people in the past four months, and it has shown no signs of abating. But the new trials may help end future outbreaks sooner.

The researchers tested more than 25,000 people multiple times, matching the results with pollution data from the time of each test. Older adults were most affected by air quality.

A State Department official says "reports suggesting the United States threatened a partner nation related to a World Health Assembly resolution are false." The New York Times says the U.S. did.

A new book explores why getting a properly formulated medicine is hit-or-miss in much of the developing world — and why the issue is massively underreported.

Trucks loaded with food people have entered Eastern Ghouta, but many medical supplies were blocked. Despite an ostensible "humanitarian corridor," shelling continued as the aid was being delivered.

To reduce unnecessary medical interventions in childbirth and respect the woman's wishes, the World Health Organization sets standards in a report.

Privately funded scientists made a virus related to smallpox from scratch, hoping their version might lead to a better smallpox vaccine. But critics question the need — and worry about repercussions.

And half the world's population doesn't even have access to essential health services, according to a report from the World Bank and the World Health Organization.

Fake, substandard and expired medications are sold everywhere, from Canadian websites to pharmacies in Niger. Controlling them, says the World Health Organization, will be no small feat.

The number of young people with obesity has risen tenfold since 1975, according to a study from the World Health Organization. At the same time, that rise has been far from uniform across the world.

The number of cases has prompted a ban on public gatherings — and concern from the World Health Organization. The disease is spreading in cities and has claimed 30 lives so far.

The new leader, Tedros Adhanom Ghebreyesus of Ethiopia, will be expected to reform the bureaucratic agency and deal with the world's growing health problems.